Progress does not compel us to settle centuries-long debates about the role of government for all time, but it does require us to act in our time.

There are folks who will equivocate. They'll say, 'You know, I'm not a scientist.' Well, I'm not either. But the best scientists in the world know that climate change is happening.

The authorization I propose would provide the flexibility to conduct ground combat operations in other more limited circumstances, such as rescue operations involving U.S. or coalition personnel or the use of special operations forces to take military action against ISIL leadership, it would also authorize the use of U.S. forces in situations where ground combat operations are not expected or intended, such as intelligence collection and sharing, missions to enable kinetic strikes or the provision of operational planning and other forms of advice and assistance to partner forces.

The men and women of America's homeland security apparatus do important work to protect us, and Republicans and Democrats in Congress should not be playing politics with that.

ISIL is a terrorist organization, pure and simple. And it has no vision other than the slaughter of all who stand in its way.

This is American leadership at its best: We stand with people who fight for their own freedom, and we rally other nations on behalf of our common security and common humanity.

One voice can change a room, and if one voice can change a room, then it can change a city, and if it can change a city, it can change a state, and if it change a state, it can change a nation, and if it can change a nation, it can change the world. Your voice can change the world.